5 Ways to Optimize Your Load Distribution for Maximum Safety

Most load-related accidents don’t start with a forklift error or a rushed warehouse worker. They start earlier, at the point where someone grabbed a standard pallet without checking whether it actually fits what they’re shipping. The engineering relationship between cargo and pallet is what determines safety outcomes, and getting that relationship wrong creates risk at every stage from storage to delivery.

Align Cargo Weight With Structural Support

A pallet deck doesn’t have the same level of strength all over its area. The stringers or blocks are where you find that, they’re the connectivity tissue that transmits the load down to the floor, or over the tines of a forklift. When you drop something heavy right down onto a deck board, in the uncharted spaces between those members, the boards bend under load. If they bend too far for the wood’s integrity, you have a failure on your hands, pallet deflection.

The solution is usually missed: just memorize the shape of your load and compare it to the structure of the pallet before you pick anything up. Anything heavy should be dead center above a stringer. Anything that distributes the full load across many deck boards is safe to place in the uncharted zone, but warehouse goods often come with specific, high-pressure points, the base of machinery, drums, metal items, the items should come into contact with as many boards as possible.

If they don’t, and it’s a small area of contact, coupled with widely spaced boards under load… you’re urging the item downwards, creating that punch-through risk. This is where standard pallets really suck for untenably non-standard inventory.

Eliminate Overhang Completely

Product overhang occurs when the product extends over the edges of the pallet. It’s often one of the most common and dangerous causes of damage to your products and pallets. Some estimates suggest that by simply removing products that overhang pallets, damage can be reduced by up to 10% immediately.

Here are some reasons for this: A product hanging over the edge of a pallet is at risk of being struck and damaged by a forklift truck when lifting or moving a pallet. Overhanging products can also easily be damaged if the pallet is double-stacked. Secondly, the overhanging product does not have the support of the pallet deck and is therefore more likely to be broken or crushed.

For businesses running non-standard product dimensions, overhang is almost unavoidable with off-the-shelf pallet sizes. Sourcing Custom Pallets in Melbourne lets businesses match pallet deck dimensions precisely to their cargo footprint, eliminating the gaps and overhangs that standard sizes create when they’re close but not quite right.

Put the Heaviest Items on the Bottom

This may sound obvious, but there’s more to it than meets the eye other than the fact that you don’t want things falling over. A pallet’s center of gravity (CoG) influences how well it travels full-motion around a curve, over a speed bump, or how well it stops during an emergency stop. A high CoG causes the load to tip over on its own momentum while a low CoG helps the stack stay upright.

Under the heavy-to-light rule, the densest, heaviest part of the load is at the bottom with increasingly lighter parts above. Think also about the footprint over which each layer applies its downward force to its neighbors: the base layer should exactly match, or even slightly exceed, the pallet deck area, while the layers above it should be slightly inset. This ensures the solid mass of weight is centered over its supporting structure.

Account For Movement During Transit

A pallet that performs well in a warehouse might not perform as well over hundreds of miles of transportation. Between the constant vibration, lateral G-forces through turns, and repeated small impacts from rough roads or minor collisions, everything has a cumulative effect. Even a well-assembled load can shift over the course of a trip and arrive in a worse state.

The first guard against this should be unitization, that’s wrapping or strapping the individual boxes or components together so they act as a single unit. The whole load is stronger than the sum of its parts, which effectively prevents each part from shifting. And, critically for goods in transit, any lateral force on the load is transferred not to the goods themselves but to the whole load.

Pallet fastening quality

Pallet fastening quality is also an issue over long distances. Pallets assembled with nails rather than screws can start to come apart under constant, long-term vibration. This affects the structural connection between deck boards and stringers: again, if you really need the load to arrive in one piece, this is an area to quality-assure at the procurement stage, particularly for heavy or high-value loads over long distances. Pallets can also be designed with gaps between their deckboards, again leading to loss of surface area and traction.

The final consideration is the sheer force of friction. The less the load can slide around on the pallet, the more stable it will be. This can be down to how tightly the load is unitized: or it could be down to the friction between load and pallet surface. The timber species, and whether the surface is treated, painted or rough-sawn, can affect this. Smooth, treated boards offer less friction and hence less resistance to sliding than rougher timber, and the difference could matter as you pull away from the lights in a city freight route.

Match Pallet Specifications to Your Safe Working Load

Each pallet is designed to withstand a specific Safe Working Load, which is the maximum weight it can carry under certain conditions. This load varies depending on whether the pallet is used for static storage, dynamic handling, or racking, as each application creates different levels of stress. A pallet that is suitable for one application may be inadequate for another.

Nearly 100,000 workers are injured in forklift-related accidents in the US every year (OSHA), with unstable loads being a leading cause. Determining the SWL and accurately accounting for the dynamic loads a pallet will be subjected to is a fundamental, but too often overlooked step, when a company is sourcing pallets based on price rather than the application they are required for.

If the load you are placing on the pallet requires specific standards to be met, then a pallet is not a commodity. That is where the problem starts.